Perry g



P. G. GARDINER.

Car Spring.

Patented Aug. 24, 1869.

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PERRY e. GARDINER,

OF NEW YORK,'N. Y.

Letters Patent No. 93,983, dated August 24, 1869.

IMPROVED RAILWAY-CAR SPRING- The Schedule referred to in these Letters Patent and making part of the name.

To all whom it may concern:

Be it known that I, PERRY G. GARDINER, of the city, county, and- State of New York, have invented new and useful Improvements in Cases 01' Frames for Railroad-Gar Springs; and that the following is a full, true, and exact description of my said improvements, and the construction thereof, reference being had to the drawings accompanying and making part of this, my specification.

The nature and purpose of my improvements are to provide a suitable metallic case or frame, in which springs, composed of steel spiral 'coils, shall be arranged and held in a vertical position under the weight and swinging movements of the car, so as not to sway or bend laterally, and so become broken, bent, and useless; and, at the same time, the frame shall not entirely enclose the springs, but leave the lower portion of the springs open'and accessible, so that dust and dirt will not accumulate in the frames and springs.

It has been found that when spiral coils are set in entirely enclosed frames or cases, for the purposes of railroad-car springs, there is a tendency to a gradual accumulation of dust and dirt within the closed case, which does not and cannot escape, or be cleaned out, except by taking off the spring from the car, and that this constantly-increasing accumulation of dust and dirt becomes so great as, in time, to choke the spring, and limit its action to the parts of the spring only which are above such accumulation.

My improvements remove this difiiculty, and, at the same time, hold the coils in their proper position, and provide, also, the other requirements of a case or frame for the reception and action of the spiral coils.

For the description of my improvements, and manner of constructing the same, I will, in the first place, refer to- Figure 3 of the dlawings, which represents a vortical cross-section through the centre of the frame and springs; and also to Fignre 8, which represents a horizontal cross-section of'thc same, at the red line aa: of fig. 3.

This spring consists of a group of eight spiral coils, a a. These springs are placed vertically between the base I) and top or cover 0, each of which is suitably grooved or recessed to receive the top and base of the springs, and hold them in position.

A tube or sleeve, (1, passes through the centre vertically, cxtcnding'above and below the top and bottom of the case or frame. Upon the base I) of the frame, and forming one piece or casting with it, is the central hollow standard .0, which surrounds the tube (1 and extends upward, a little over half the height of the spring. It fits the central tube, so as to slide closely upon it during the action of the spring.

The base of the case is also cast in the exterior shape shown in fig. 8, so that a circular socket is formed by the two parts, I) and e, of the size or diameter of the coil of the spling. "he cap or cover of the frame is like the base in construction, but its sides, or periphery, e e, extend downward about half the length of the spring, so as to partly surround each spring,-

coils are sufficiently supported by and between the segmental standardc and the sides of. the cap 0', and

the frame is open at the lower part, so as to prevent any accumulation of dirt or dust, and" to be readily cleaned by a brush. The stability of the spring is also further provided for by the sleeve (1. The spiral coils have the desired freedom of action while thus set, and secured and supported in a vertical position, so as not to be bent or swayed by the swinging motion of the car.

. Another form of frame or case, embodying my improvements, and secmin g the objects thereof upon the same principles, is shown in Figure 2- 0f the drawings, which represents a frame containg eight spiral springs, by a vertical cross-section through the centre, and Figure 7, which is a transverse horizontal section of the same at the line x :r in fig. 7

In this form of the frame or case, the central standard or supporting-pin c, is attached to the cap, as well as the base of the frame, the part attached to the cap being substituted in place of the sides, or periphery, c c, in fig. 3, this arrangement being intended to have the springs still further open, and yet give them the necessary support and protection against bending or swaying out of line. The tube or sleeve runs through the centre of the frame, upon which the working-parts slide, and which is provided at each end with a screw-nut or collar, ff, to hold the parts together.

A further modification of my improvements is shownin' Figures 5 and 10, which are similar sections of those before referred to. This frame contains only four springs. The cap 0, and sides or periphery c, are

like those before dcscribed and shown in figs 3 and 8. The base I) is also the same, but the central segmental standard 0 is dispensed with, and the tube (1 is substituted in its place. This tnloeis cast in one piece with a screw-nut at each extremity, and by which arrangement, the parts of the frame are held in position,

so as to carry and support the spiral coils.

Figures I and VI represent, in similar sections, a frame, carrying two spiral coils. In this the central standard is dispensed with, and the cap 0 and sides, or periphery 0', are similar to those in fig. 5. The bolt 9 extends the entire length of the frame, and passes through both the cap and base, its lower extremity having-an upset or head, with a recess of the base, as seen at g, and its upper end is provided with a screw-nut, by which arrangement the parts are held together. The cap 0 has attached to it the tube or sleeve, which surrounds the bolt, bout half thelength of the spring, and slides easily upon the bolt.

Figures and 9 represent, in similar sections, a

single coil, and case therefor, the cap 0, sides, or periphery o, and base b, being arranged as a frame for the spiral coil 41, but the bolt, central standard, and

irregular pressure or surging of the car.

2 The form and construction of the central stand ard 2, whether used in combination with the cap or base singly, or with both in the same frame, and in part surrounding and sliding upon the central tube (1, operating substantially in the manner and for the purposes described.

\Vituesses:

I. B. STAPLES, 0. PH. WAGNER.

P. G. GARDINER.

against bending or being thrown out of line by the 

